The heating wire serves as the core component of the atomizer, and varying designs directly impact the ultimate vaping experience. This segment focuses on the initial step of heating wire design—resistance control.

常规导体电阻计算公式如下:

Methodology for Calculating Resistance in Heating Wire Design

Methodology for Calculating Resistance in Heating Wire Design

以目前通用的Mesh发热片为例,较多的折弯和圆角影响了常规方法计算的精度,往往会导致打样后阻值偏差较大。那么如何在设计阶段控制阻值的变化呢?

 

本期介绍如何利用数模拟软件COMSOL Multiphysics来计算Mesh发热片电阻。

1、几何模型导入

将外部几何模型导入软件,注意单位的一致性。

Methodology for Calculating Resistance in Heating Wire Design

2、材料属性修改

材料库自建材料,输入参与计算的关键参数。

Methodology for Calculating Resistance in Heating Wire Design

3、网格划分

控制不同网格精度

Methodology for Calculating Resistance in Heating Wire Design

 

4、边界条件设置

设置终端和接地边界,确定电流的流入和流出边界,终端选择电流端。

Methodology for Calculating Resistance in Heating Wire Design

5、求解

输入任意电流,待计算完成后,开启全局计算功能,输入电阻计算表达式,求解不同网格精度下的电阻值,验证阻值无变化后可忽略网格精度对阻值的影响,即为最终阻值。

Methodology for Calculating Resistance in Heating Wire Design

  

原文始发于微信公众号(雾化探秘):Methodology for Calculating Resistance in Heating Wire Design

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